We are starting bcoin with the command `bcoin --http-host=:: --host=:: --daemon` on a public server for testing. The bcoin.conf file is show below. This is a testnet instance.

bcoin.conf

# Sample bcoin config file (~/.bcoin/bcoin.conf)

#
# Options
#

network: testnet
use-workers: true
# max-workers: 4
# worker-timeout: 5000
# sigcache-size: 50000

#
# Node
#

#prefix: ~/.bcoin
db: leveldb
max-files: 64
cache-size: 100

#
# Logger
#

log-level: debug
log-console: true
log-file: true

#
# Chain
#

prune: false
checkpoints: true
coin-cache: 40
index-tx: false
index-address: false

#
# Mempool
#

mempool-size: 100
limit-free: true
limit-free-relay: 15
reject-absurd-fees: true
replace-by-fee: false
persistent-mempool: false

#
# Pool
#

selfish: false
compact: true
bip37: false
bip151: true
listen: true
max-outbound: 8
max-inbound: 30

# Proxy Server (browser=websockets, node=socks)
# proxy: foo:[email protected]:9050
# onion: true
# upnp: true

# Custom list of DNS seeds
# seeds: seed.bitcoin.sipa.be
seeds: testnet-seed.bitcoin.jonasschnelli.ch, seed.tbtc.petertodd.org, testnet-seed.bluematt.me, testnet-seed.bitcoin.schildbach.de

# Local Host & Port (to listen on)
host: ::
#port: 8333
# testnet 18333
port: 18333

# Public Host & Port (to advertise to peers)
# public-host: 1.2.3.4
# public-port: 8444
public-host: 52.206.180.64
public-port: 18444

# BIP151 AuthDB and Identity Key
bip150: false
identity-key: 74b4147957813b62cc8987f2b711ddb31f8cb46dcbf71502033da66053c8780a

# Always try to connect to these nodes.
# nodes: 127.0.0.1,127.0.0.2

#
# Miner
#

coinbase-flags: mined by bcoin
# coinbase-address: 1111111111111111111114oLvT2,1111111111111111111114oLvT2
preverify: false
max-block-weight: 4000000
reserved-block-weight: 4000
reserved-block-sigops: 400

#
# HTTP
#

# :: for ipv4 and ipv6
http-host: ::
#http-port: 8332
http-port: 18332
# ssl: true
# ssl-cert: @/ssl/cert.crt
# ssl-key: @/ssl/priv.key
service-key: REDACTED
api-key: REDACTED
wallet-auth: false
# no-auth: false

curl command and output

➜  ~ curl -X POST \
  http://bcoin.staging.chainpoint.org:18332/wallet/primary/send \
  -H 'authorization: Basic REDACTED' \
  -H 'cache-control: no-cache' \
  -H 'content-type: application/json' \
  -H 'postman-token: 22460395-da73-aea6-49a1-3fdfd54af690' \
  -d '{
  "token": "7f0c7414008a12871a9d76ad00ef8206151921f23649eb96fbeb67c4ab3e85cc",
  "rate": "0.00020",
  "outputs": [{
    "value": "0",
    "script": "6a207f0c7414008a12871a9d76ad00ef8206151921f23649eb96fbeb67c4ab3e85dd"
  }]
}'
{
  "wid": 1,
  "id": "primary",
  "hash": "6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9",
  "height": -1,
  "block": null,
  "ts": 0,
  "ps": 1496178644,
  "date": "2017-05-30T21:10:44Z",
  "index": -1,
  "size": 234,
  "virtualSize": 234,
  "fee": "0.0000472",
  "rate": "0.0002017",
  "confirmations": 0,
  "inputs": [
    {
      "value": "0.99953454",
      "address": "mrboTgkduFhWYYXNyzUednfjaLV7zXJzya",
      "path": {
        "name": "default",
        "account": 0,
        "change": true,
        "derivation": "m/0'/1/206"
      }
    }
  ],
  "outputs": [
    {
      "value": "0.0",
      "address": null,
      "path": null
    },
    {
      "value": "0.99948734",
      "address": "mvkx9dkDcvLAmhPYrH8YByFsv7zQAdxx3b",
      "path": {
        "name": "default",
        "account": 0,
        "change": true,
        "derivation": "m/0'/1/207"
      }
    }
  ],
  "tx": "0100000001a9672286419242308d93651e4bb3f62410a10fb7d454a1ee3df0448c810df030010000006a473044022023b8680bc2650f0d71ef55e19fff5222fb1fa2bf42b3f8128602d5dbd6152f1b02204bbff3222bc0e2932cfd38377c95790af994c94779afe268d75117ed7d6999860121031e80e01cb928d42889167f442dd6d97e65aabeec2cc1826b64ceb3c51874228effffffff020000000000000000226a207f0c7414008a12871a9d76ad00ef8206151921f23649eb96fbeb67c4ab3e85ddbe18f505000000001976a914a72f96cb8018b53cd2f339580562d85d8018f98388ac00000000"
}

debug.log

# relevant lines from debug log for test TX send with above curl command. Note especially the lines with 'TX was orphaned in mempool'

[D:2017-05-30T21:10:44Z] (http) Request for method=POST path=/primary/send (::ffff:68.173.147.255).
[I:2017-05-30T21:10:44Z] (wallet) Incoming transaction for 1 wallets in WalletDB (6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9).
[I:2017-05-30T21:10:44Z] (wallet) Added transaction to wallet in WalletDB: primary (1).
[D:2017-05-30T21:10:44Z] (wallet) Sending wallet tx (primary): 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9
[D:2017-05-30T21:10:44Z] (mempool) Added orphan 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 to mempool.
[W:2017-05-30T21:10:44Z] (node) TX was orphaned in mempool: 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9.
[W:2017-05-30T21:10:44Z] (node) Attempting to broadcast anyway...
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (107.22.136.152:46438).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (107.22.136.152:46438).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (47.89.188.149:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (47.89.188.149:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (45.79.85.218:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (45.79.85.218:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (45.33.46.133:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (45.33.46.133:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (52.10.6.141:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (52.10.6.141:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (144.76.136.19:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (144.76.136.19:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (80.100.203.151:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (80.100.203.151:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (109.235.65.88:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (109.235.65.88:18333).
[D:2017-05-30T21:10:45Z] (net) Peer requested tx 6fc7b74df44c7c592fbbd894ed13b7d2ff27cb69104ed95bd323a2a22bf55bd9 as a witness packet (94.79.54.206:18333).
[D:2017-05-30T21:10:45Z] (net) Served 1 txs with getdata (notfound=0) (94.79.54.206:18333).
[D:2017-05-30T21:11:14Z] (net) Requesting 1/1 txs from peer with getdata (45.79.85.218:18333).
[D:2017-05-30T21:11:14Z] (mempool) Added 4914a95abdf1b9d76931eb2621f95f1752df17e29518f0d087db45c314b28896 to mempool (txs=97).
[I:2017-05-30T21:11:17Z] (net) Received 1 addrs (hosts=1000, peers=10) (72.36.89.11:45214).
[D:2017-05-30T21:11:19Z] (net) Requesting 1/1 txs from peer with getdata (80.100.203.151:18333).
[D:2017-05-30T21:11:19Z] (mempool) Added 04bd707b7968b517f8ed5c692cf3322b7791cab5a1b96058dab63d211b5f7807 to mempool (txs=98).
[D:2017-05-30T21:11:44Z] (net) Requesting 3/3 txs from peer with getdata (45.33.46.133:18333).
[D:2017-05-30T21:11:44Z] (mempool) Added 4d5b78277787b3dac91bc0f1b6282c65eb1f0556cb98cab5c98c128cfe3faf8c to mempool (txs=99).
[D:2017-05-30T21:11:44Z] (mempool) Added be7dae4bdaa206dc57dcc671f6a7bd2994de1bbf66fd1b9115d7c7a584e4620e to mempool (txs=100).
[D:2017-05-30T21:11:44Z] (mempool) Added e3b99f3308b13517fe1ca40f948084e1b8d1bf559c329e5fe2c212e41eb9460b to mempool (txs=101).
[D:2017-05-30T21:11:46Z] (net) Requesting 1/1 txs from peer with getdata (45.33.46.133:18333).
[D:2017-05-30T21:11:46Z] (mempool) Added c093114d91dc5021d146913c4ff2f7ebb59776117163ca2db7ecd5afba07688d to mempool (txs=102).

gistfile1.txt

# Tried to find TX on a testnet explorer looking for the input address and found nothing

https://www.blocktrail.com/tBTC/address/mrboTgkduFhWYYXNyzUednfjaLV7zXJzya

Brief description of issue in conversation with Steven:

First issue is around trying to send a TX to testnet using the /wallet/:id/send REST API. We see the TX show up on a testnet explorer sometimes, but not others (although in both cases we get back a full JSON structure from bcoin with a 200 response). In this case we are also seeing errors related to orhpan tx I believe on our server